Corn harvebter



N. F. ANDREWS ETAL Re. 23,083

Feb. 8, 1949.

CORN HARVESTER 6 Sheets-Sheet l Original Filed May 23, 1941 FIG. 1

TW/m

Feb. 8, 1949. N. ANDREWS ETAL CORN HARVESTER 6 Sheets-Sheet 2 Original Filed May 23, 1,941

` ATTORNEYS.

Feb. 8, 1949. N. F. ANDREWS Erm.

CORN HARVESTER 6 Sheets-Sheet 3 Original Filed May 25, 1941 F l JNENTczlS:

A oRNEYs Feb. 8, 1949. N. F. ANDREWS x-:TAL Re- 23,083

CORN HARVES TER 6 Sheets-Sheet 4 Original Filed May 25, 1941 INVENTORS! Feb. 8, 1949. N. F. ANDREWS ET AL Re- 23,083

CORN HARVES TER Original Filed May 23, 1941 6 Sheets-SneeI 5 1 F l G Q FIG.

FIG.`

Feb. 8, 1949. N, ANDREWS ETAL Re. 23,083

CORN HARVESTER L J GG" o oo 262 lNvENToRsf asignan sa. s, 194s UNITED sTATEs PATENT OFFICE CORN HARVESTER Norman F. Andrews, Moline, Ill., and Russell L. Dort, Davenport, Iowa, alsignors to Deere Company, Moline, lll., a corporation of Illinois Original No. 2,347,871, Med May 2, 1944, Serlll No. 394,806, May 23, 1,41.

Application ior reissue January 19, 1946, Serial No. 642,209

41 clama. (cl. sis-1s) 1 Y The present invention relates generally'to corn harvesters and more particularly to corn harvest- .ing implements of the type adapted to be mounted on and carried by a tractor. and has for its principal object the provision of a tractormounted corn harvester that is considerably lighter 1n weight and less expensive to manufacture, but is rugged, strong and durable. and operates with improved eiliciency.

In connection with the provision of a corn harvester of lighter weight, an object of this ining beam attached to the tractor between the front and rear wheels thereof, and the husking unit is swingably mounted on a link supported on the rear axle housing of the tractor and pivotally connected to the rear end of the gatherer unit.

Still another object relates to the provision of a slmplined but more elcient husking mecha-- nism and morespecitlcally, it is an object of this invention to provide conveying means for moving ears of corn over the husking rolls, which is especially adapted to maintain the ears in a position parallel to the axes of the rolls and in engagement with both of the latter to insure that the husks and silks are quickly and thoroughly removed therefrom.

Another object has to do with the provision of an ear conveyor between the snapping rolls and the husking rolls, the paddles of which disengage themselves more eillciently and quickly iromthe ears at the point of discharge.

A further object of this invention relates to the provision of a separating device in connection with the husking unit, which eectively removes dirt and other ilne particles from the husks and sllks which are separated from the ears by the husking rolls, then removes any kernels of corn which may be carried along with the husks. delivering them to the wagon elevator along with the ears of corn, and nally discharges the husks and silks upon the ground, or to any desired receptacle separate from the corn.

Still another object relates tothe provision of a fan for directing a single blast of air through the ears of corn from the husking rolls and through the kernels of corn from the husk conveyor, as they fall to the elevator hopper.

Still a further object relates to the provision oi' novel means for raising the 'corn harvesting implement into position to be mounted on the tractor. In the accomplishment of, this object, the gatherer is mounted on a transverselyI extending supporting beam, which is rotatable relative to the gatherer, and in the ease of a two-rowv harvester, the supporting beam extends transversely beneath the tractor frame and supports a gatherer at each end thereof in a position alongside the opposite sides of the tractor, respectively. 'I'he transverse supporting beam is connected to the body of the tractor by a pair of laterally spaced chains or other flexible connecting means, which can be wound upon thebealn i vby rotatingrthe latter .and thus raising the implement into mounted position on the tractor. In connection with a two-row mounted impiement, it 'is' a further object to provide means for assisting the front wheels of the tractor to roll over the transverse supporting beam when the latter is near the ground in lowered position.

-A related object has to do with the. provision of means for properly positioning this ramp as the implement is lowered to the ground', so that the tractor can be backed out of the' Aimplement frame without any further attention to the ramp.

Still a further object of this invention relates tothe provision of rollers at the forward end of the implement frame adjacent the front wheels of the tractor and adapted'to engage the latter when they are turned during the steering operations, to insurev that the wheels do not catch upon and damage any part of the impley ment mechanism.

Another object of this invention relates to the I provision of a novel spout at the end of the wagon elevator. which tends to distribute the ears of corn in the wagon to obviate the necessity or moving the wagon fore and ait relative to the present invention will be apparent to those skilled in the art after a consideration of the following description, in which vreference is had to the drawings appended hereto, in which Figure 1 is a plan view of a two-row tractor mounted corn harvesting implement attachment,

embodying the principles ot the present invention, the hood of the left hand gathererunit being removed to show the gatheringl and oon.-

veying mechanism beneath;

Figure 2 is a side elevational view of the tractor with the implement attachment mounted thereon. the near rear wheel of thetractr being mner side of the harvester unit on theright sicie i tion along a generally transverse vertical plane" passing through the tractor showing the rear of the gatherer units lowered to the ground and the husking units removed, as 'indicated genert allyby the line 5-5in-Flgure4:

Figures 6 and 'Iv are enlarged sectional elevational views of the lifting and supporting mech-` anism in lowered and raised positions, respectively, and the mechanism for tilting. the implement relative to the tractor, taken along the line .l-linFlsllreS;

Figure 8 is an elevational view taken along a line 8-3 inFigure 5," showing the details of the reduction gear, by means of which the main supporting beam is rotated to raise and lower th Y implement relative to the tractor;

Figure 9 is -a sectional elevational view taken along a line 5 3 in Figure 5, showing the details aaoss `.iswapair of downwardly extending legs 30, respectively, whichserve as 'supports for the picker units when'the latter are resting upon the ground.

as indicated in Figure 5.

The two picker units are mounted onv a common transverse supporting beam 35, connected to the frame members 23 by means of a pair of .inner Journal bearings 3B,V which are .mounted'on the forward side of the legs 3|), and

a A.paixof outer Journal bearings 36' on the forward sides of a pair of outwardly spaced supporting plates 31, the latter being fixed to thetransverse frame member 23 at points spaced outwardly of the legs 30. The main supporting beam 55 comprises an implement portion common to both picker units and is in the form of a cylindrical pipe, which extends transversely beneath the tractor between the front diri'gible wheels I5 of the ramp for assisting the front tractor wheelsV roll over the transversebeam;

Figure 10 is a fragmentary elevation view showing the upper end of the -wagon'elevator and the ear distributing spout;

Figure ll is a plan view of shown in Figure 10;

Figure 12 is a rear view of the tractor show the framework mounted on the rear axle housing `the mechanism and the rear traction wheels i1. The beam 35 is connected with the tractor body I5 bymeans of a pair of laterally spaced flexible lifting members l5 comprising a plurality of short links 4| interconnected by bolts 42 and thus providing chains which 4are connected at their lower ends by bolts' to a pair of lugs or ears 43, rigidly fixed as by welding to the pipe be'am 35 in axial alignment thereon. The upper ends of the lifting chains lli are swingably connected by pivot bolts M to a` pair of mounting members in the form of supporting arms 45, respectively, the arms I5 being rigidly bolted at 45 to the side of the tractor body I 5vand are braced by a pair of forwardly best illustrated in Figure 6. The implement is raised bodily into normal operating position on on which the implement is supported, together l with the mechanism for driving the various parts of the implement mechanism from. the power take-oil' shaft of the tractor; and

Figure 13 is a fragmentary plan view, drawn to an enlarged scale, of the supporting framework on the right hand side `of the .tractor axle housing. s

Referring now tothe drawingathe tractor or .mobile frame comprises a narrow longitudinally extending body I5, supported on a pair of closely spaced dmgible from; wheels Il and a. pair or comparatively widely spaced rear traction wheels I1. iixed to a pair of laterally extending axles I8. which are Journaled in the usual axle housing I3 which forms an integral part of the tractor body.

The corn harvesting implement attachment includes a pair of crop gathering, picking or snap- -ping' units 2l disposed'on opposite sides of the tractor body vI l adjacent the forward end thereof. Each racking unit 2l comprises a pair of cooperative snapping rolls 2|, 22, mounted on shafts 23, 2l, respectively, which are supported at their lower ends in conventional bearings 25 fitted between the tapered point 25 of the rolls and the cylindrical body thereof in the usual mannen-n The inner side edges thereof. The ange 2l along the the tractor by rotating the pipe member 35 in a counterclockwise direction as viewed in Figure 6.

.'I'hus, the pipe 35 acts as a drum on which is woundthe chain of links III and in the last porbottom'edge of the plate 21 is fastened to a trans-t 75 tion of the Winding movement, the pipe 35 is rotated to a position on top of the two supporting arms I5, the latter being formed at their forward ends with a curved recess or shallow slot -43 adapted to receive the pipe 35 in its raised position, as illustrated in Figure 7. I'he means for rotating the pipe beam 35 will be described later. The beam 35 and chains I0, together with the means for rotating the beam constitute a jacking device for raising the harvester from an inoperative position on the ground to an operative position on the tractor. Since the jacking device has provision for locking the same to hold the harvester in operative position, it serves' as a y mounting means for the harvester.

Since the frames of the picker units are journaled on the main supporting pipe beam 35, they can be tilted about the main axis of the beam 35 when the latter is in its raised position. This tilting is accomplished by means of a hand lever 50, which is rigidly secured by bolts 5I Ato a, vertically disposed plate 52, the latter being rigidly mounted as by welding on the outer end of a rock shaft 53, which is Journaled in the two arms45 for rocking movement about a transversely extending axis. An arm 52 is fixed to therock shaft 53 at the opposite side of the tractor. The plate 52 and arm 52' are provided with pivoted links 5l, the rear ends of which are turned at I2' and in `oi' the'plate l2. and thelinks extend forwardly through sleeves which are pivctally connected by bolts 02. to plates Il; the lutterbeingA xedly attacld to the vertical flanges 28 of the plates 21. rpectively.

, The forward end of each link l0 is provided with an adjustable. collar. ,which engages the sleeve I Il when the lever I0 is swung "rearwardly, to l swing the main transverse frame member 29 rearwardly` with respect tothe pipe member 3l and thus to raise the forward end of each picker unit to adjust the height of the forward endsof the snapping rolls .2|, 22 above the ground. By virtueof the sliding connection-between the link 00 and the sleeve 8|, however, the forward end of either vpicker unit is free to be. pushed upwardly if 'it should encounter an obstruction in the ileld. The llever 50 is held in adjusted position by means of asuitable latch 84 which engages a.

notched sector supported on brackets 56 which are rigidly bolted to the side of the tractor.

With the exception of the 'main supporting beam 35 and the individual transverse frame members 29 of the two opposite picker units 20, the frame structure of each of the picker units is constructed almost entirely of sheet metal sections for the sake of lightness and to save expense. Each of the outer gatherers 10 includes a forwardly and downwardly inclined lower sheet 1| having a downwardly turned outer edge flange 12, the sheet 1| being supported adjacent its rear end on the transverse beam 29. Rigidly attached beneath the sheet 1 I' and extending forwardly from the cross beam 29 is a trough-shaped sheet metal reenforcing member 13, which is relatively deep at its rear end and tapers to a shallow section near the forward end of the sheet 1|, and thus provides a beam of tubular box section for supporting the outer snapping roll. This is` appreciably lighter, yet stronger than conventional structural frame members. The inner longitudinal edge of the sheet 1| is provided with an upwardly and inwardly directed vflange 1I (see Figures 1 and 3), which overhangs the outer side of the outer snapping roll 2| and serves as a conveyor trough for the ears of corn separated from the stalks by the snapping rolls 2|, 22. The opposite side of the conveyor trough is defined by a generally vertically disposed sheet metal wall 18, which rises upwardly and outwardly and is curved over the top; as at 18, to serve as a guide for the cornstalks.

A conveyor comprising an endless chain 11 and paddles 18, is trained around a. sprocket 19 which is fixed to a shaft 80 journaled at its lower end in a bearing 8| in the sheet 1I adjacent the forward end of the latter. The innerv flight of the chain 11 moves the paddles 18 upwardly and rearwardly in the conveyor trough adjacent the snapping rolls 2|, 22 and thus moves the ears of corn away from the snapping rolls toward the rear of the implement. At its upper end, the conveyor chain 11 passes around a pair of sprockets 82, 88 mounted on shafts 8l, 85, respectively, which are supported in the sheet 1| in suitable journal bearings. The outer flight of the conveyor chain 11 passes forwardly along the outer edge of the sheet 1| to the sprocket 19 at the forward end. The forward end of the sheet 1| is curved to conform approximately with the path of the outer ends of the paddles 18 and is provided with a sheet metal wall 88, which is curved in conformity with the rounded front end of the sheet V1| and rises substantially perpendicular thereto we ruht sperone inv-aie un and serves the purpose of corn that tend to fait forwardly inthe path o! the conveyor 1l before' they are engaged by one ofthepaddles.'1hewalll0alsoservesasapart ofthe sheet' metal frame of the picker.

' spaced above the sheet 1| is a second sheet 90, disposed in asubstantially parallel plane with the plane of' the sheet 1| and extending forwardly of the forward end' of the latter. The sheet 98 lo is flxedly attached to the upper end of the' wall 88 and also is fixed to the side wall 'I5l of the gatherer. A transversely extending sheetmetal `bracell extends between the top ofthe sheet 99 and the under side of the curved portion of the 1.5 gatherer. :A channel-shaped sheet metal brace 92 is connected between the upper and lower -sheets 90, 1| at the rounded rear kend of the upper sheet 90..` To this brace 92. is also connected the forward end of the side wall 19 of 20 the conveyor trough. y A

d The shaft B0 on which is fixed the sprocket Il at the forward end of the elevator chain 11, is journaled at its lower end in a bearing 8| mounted `on the lower sheet 1|, and extends upwardly therefrom generally perpendicular to the sheet 1|, through an aligned aperture in the upper sheet 90, and is supported in a bearing 98 fixed to the upper sheet 90. The shaft 80 is extended above the bearing 93 and supports at its upper end, a sprocket 94, around which is trained a gatherer chain 05 having outwardly projecting lugs 90 for engaging the stalks of corn to gather the latter into the snapping rolls 2|, 22. The gatherer chain 95 extends forwardly along the outer edge of the sheet 90 from the sprocket 90, and passes around a lower sprocket 91, which is journaled in a lower bearing 98 fixed at the forward end of the sheet 90, and in an upper bearing 99 which is supported on an arm |00, mounted at its rear end in the lcenter of the sheet 9| and extending forwardly therefrom above the sprocket 91 at the forward end of the sheet 90. A second gatherer chain |04 is trained around a sprocket |05, which is xed to the shaft 80 intermediate of the sheets 90,1 I, and around a forward sprocket |08, which is iournaled in a bearing |01, mounted beneath the upper sheet 90. The forward end vof the arm |00 is also provided with a transversely extending frame member |08. 5o to which is pivotally connected a supporting arm |09, to which is attached a floating gatherer point H0, which swings about the pivot point of the arm |09 on the frame member |08. A brace rod extends rearwardly and outwardly from the frame member |08 and is xed to the forward end of the lower sheet 1 I.

The inner gatherer comprises a pair of side walls ||5 extending alongside the tractor on opposite sides thereof and converging forwardly of the tractor and interconnected by a rounded hood IIB extending around the front end of the tractor. A floating gathered point ||1 is supported on the forward ends of the converging walls ||8 in any suitable manner, as is well-known to those skilled in the art. 'I'he inner side walls Ill are connected with the walls 15 on the opposite gatherer by means of a tubular sheet metal bracing member ||8 extending over the ear conveyor and over the upper end of the snapping rolls 2|,

22 on each side of the tractor.

A pair of inner gatherer chains |28 are trained around a pair of fore and aft spaced pulleys |28, |21, supported on the inner gatherer walls Ill. Also Joumaled on the inner gatherer walls lli on fore and aft extending axes are a pair oflon- :gl'tudinally extending rollers |23 at each side o! the front wheels |3 of the tractor and are adapted to engage the latter if the wheels are turned too sharply in either direction, thua preventing damage to either the tires or the chains :|25. A pair of sheet metal beams |33 of tubular box section, extend forwardly from the inner end of each of the transverse beams 2l for supporting each of the inner snapping rolls. The upwardly extending flange 14 along the inner side of the lower sheet 1| is extended upwardly and inwardly across the upper ends of the .snapping rolls 2|, 22, as indicated at 14' (see -Figures 1 and 5), and serves to cover the upper i snapping roll bearings.

`the sheet 1| is curved downwardly and inwardly The inner rear corner of behind the inclined iiange extension 14', as indicated at |35.l This causes the ears of corn,

which are moved upwardly and rearwardly by the paddles 18, to slide inwardly toward the tractor body and away from the paddles at the upper end -found to provide a better and more emcient disengagement of the paddles from the ears than a conveyor in which the chain turns approximately 180 degrees around the upper sprocket 33.

Each of the crop treating or husking units, indicated generally by reference numeral |40, comprises a sheet metal trough having longitudinally extending side Walls |4Il |42 disposed substantially in fore' and aft alignment with the side walls 15, ||5 of the gatherer unit 10. The forward end of each husking unit |40 is rigidly mounted on a generally triangular plate member |43 (see Figure 4), which is pivotally connected by a. bolt |44 to the rear end of a supporting arm |45, which is rigidly connected by bolts |45 to the side of a gear housing |41 which is rigidly mounted on the transverse frame member 20.

: Each of the husking units is supported intermediate of its ends on a pair of laterally spaced legs |50, |5I disposed on the outer and inner sides of the husking unit |40l respectively, and pivotallyconnected thereto by bolts |52. The lower ends of the legs |50, |5| are pivotally supported forswinging movement about a transverse axis, on a transversely disposed structural frame member |53 which is mounted on the upper end of a pair of vertically disposed laterally spaced angle bars |54, each of which is rigidly bolted by stud bolts |55 to an implement supporting boss `|50 integrally formed on the rear side of the tractor axle housing I0. The two legs |50, |5|

are interconnected by a cross bar |51 into a single rigid structure. Thus it is evident that .when the picking umts are rocked by the lever l about the axis of the tubular beam 35, the husking units |40 are free to'swing relative'to the tractor to maintain proper alignment with the picking unit. Furthermore, the picking units can be lowered to the ground until they rest on the legs 30 without disconnecting the upper ends of the husking units from the supporting legs |50, thus facilitating assembly and disassembly on the tractor, as will be explained in detail later.

A pair of laterally spaced longitudinally extending husking rolls |30, |31 are lournaled in each husking unit between the walls I4|, |42. The inner husking roll |31 is a smooth cylindrical roll made of hard wood, preferably hickory maple or hickory. The other roll |33 is made oi' firm rubber. about the consistency of the tread of an automobile tire, and -is helically grooved to provide helical ridges |33', which have closely spaced axially extending notches therein. This combination of smooth hard wood and helically grooved rubber rolls provides a highly eillcient and long wearing husking mechanism which gives good results over a' wide range of crop conditions and weather conditions. In view of the high eiliciency at which these rolls operate, itis possible to huskall the ears of corn as fast as they are picked, using only one pair oi husking rolls. In order to operate emciently, however, it is necessary to insure that the ears of corn are immediately aligned parallel with the rolls and between the latter as soon as the ears fall from the upper end of the conveyor trough, for if the ears are merely rolled over the rolls in a transverse position, the rolls are unable to take hold of the husks. Her'etofore, husking rolls have been provided with ear conveyors oi the endless chain t-ype to move the ears along the rolls, but such conveyors have generally been provided with ear-engaging paddles which extend across the two rolls, so that if an ear falls upon the rolls in a transverse position, it is very likely to be moved from one end of the husking rolls to the other without being properly aligned therewith. According to the principles of the present invention, however, the husking rolls are provided with a pair of conveyors, one on each side of the husking rolls, and having ear engaging paddles which extend only about half-way across the pair of husking rolls. That is to say, each of the paddles |00, attached to the outer conveyor chain IGI, extends inwardly over the grooved rubber roll |36, terminating adjacent the longitudinal central vertical plane of the pair of rolls, preferably just short of the central plane. Each of the paddles |62 attached to the inner conveyor chains |63 extends only over the wooden rolls |31, terminating adjacent the longitudinal central plane ofthe pair of rolls. With this arrangement, an ear falling from the end |35 of the conveyor trough transversely of the pair of rolls will be engaged at one end or the other 'by one of the paddles |50 or |62 which are staggered in order that the paddles will engage only one end of the ear and swing it around in roll. The rolls are rotated in such direction that the helical grooves and ridges tend to move the ears of ycox-n rearwardly along the rolls and thus further assist in delivering the ears to the rear ofthe machine.

It will be noted that the inner conveyor chains |33 are each disposed in a vertical plane and are trained around 'a pair'of sprockets 305 rotatable about transversely extending axes. 'I'he lower or return iligh`t of each inner chain |63 passes downwardly under an additional pair of sprockets |05. Each of the outer chains IBI is trained around a pair of sprockets |60 lwhich are disposed on generally vertical shafts and thus the sacas-.- g

outer chains |8| are disposed in a transversely extending plane. This arrangement of conveyor chains provides for compactness and efficient operation.

Disposed beneath the pair of husking rolls on each side of the implement is a U-shaped trough |10 extending longitudinally of the husking rolls and adapted to receive the husks and silks which are removed from the ears by the rolls. An auger conveyor |1| is disposed longitudinally within each trough |10 and comprises a helically formed vane ilxed to a shaft |12. The trough |10 is perforated finely, so that any dust or particles of grit are dropped through the perforations but the kernels of corn are retained in the trough. The trough |10 is extended rearwardly beyond the rear end of the husking roll conveyor and is provided with a section of coarsely perforated mesh |19 through which the kernels of corn are free to pass, but which is line enough to retain the husks and silks. are discharged laterally inwardly over chutes |11, while the husks and silks are moved rearwardly to a discharge opening |14 on the outside of each of the troughs. The auger |1| is provided with a straight blade |15 at the rear end in order to sweep the husks and silks laterally outwardly over a pair of chutes |18, thus discharging the husks and silks upon the ground at the rear of the implement.

The paddles |80, |52 of the ear conveyors move the husked ears rearwardly over an apron.;

|90 at the rear end of each pair of husking rolls. These aprons |80 are curved downwardly at their rear ends to discharge the ears of corn at the rear end of the implement on each side of the tractor, into a hopper |8| which extends across the rear end of the tractor. The section lof coarse mesh |13 in each of the troughsv |1|l aprons |80 at the opposite sides of the implevment,y and having exhaustA ducts |84 extending upwardly and rearwardly to direct air blasts between the husking units and the hopper |9|. Each of the fans is journaled on a supporting frame |89 which is swingably mounted by means of suitable pivot bolts |89 on a pair of supporting ears |90 xed to the back side of the transverse frame member |53. Each of the frames |88 is supported by a tension link |9| connected to a vertical post |92 which is rigidly mounted links |9| is provided with an adjustable nut |93 by means of which the frame |88 and fan-|83 can be adjusted vertically about the axis of the pivot bolts |89 for the purpose of adjusting the' direction of the air blast and also for tightening and loosening the fan driving belts |94, the latter being trained around pulleys |95 attached-tothe fan shaft.

The hopper I8| is mounted on and discharges into a grain elevator |98 mounted on a supporting framework |99 that is rigidly attached to the.

drawbar support 200 of the tractor.' The frame |99 is also supported by a pair of'forwardly and upwardly extending tension members which;

The kernels of cornA on the horizontal member |53. Each of the' l0 are rigidly bolted to the transverse frame members |59 on opposite sides of the 'tractor axle housing. The conveyor |98 includes a pair of endless chains 202 extending around suitable pulleys at the lower and upper. ends of the conveyor |99, respectively, having transverse con.

veyor paddles 208 connected -to the opposite chains 202. The ears and kernels of corn in the hopper |8| feed downwardly into the conveyor and are conveyed upwardly and rearwardly and discharged from the upper.`- or rear end thereof. (See Figures l0 and 11.)

Attached to the upper end of the conveyor, is -a discharge spout 205 having rearwardly diverging side walls 205 and a bottomwall 201.

The bottom won 201 is provided with o slot m.

which widens toward the rear end of the spout 205- and thus serves to distribute the ears of corn over the wagon in a. longitudinal direction,

.as some of the ears fall endwise through the narrow forward end ofthe slot 208, while others of the ears drop upon the spout in a transverse position and thus roll rearwardly down the spout until they fall though a wider portion of the slot. Still others of the ears slide longitudinally down one of the side portions of the bottom wall 201 of the spout and drop off the rear end thereof. This type of spout has been found very effective in distributing the ears of corn evenly fover the bottom of the wagon, which is drawn lsite ends thereof in -a pair of supports 2|| which are mounted on .the supporting framework |99. The conveyor |98 is thus swingable about the transverse axis of Athe shaft 2|0 but is held in up- -wardly and rearwardly inclined position by a pair.

of tension rods 2|2 which are attached to the sides of the elevator by any suitable means (not shown) and attached at theirforward ends to a pair of eye bolts 2|3, fixed to the upper ends of the posts |92, respectively.

`It has been mentioned that the corn harvesting implement is raised and lowered relative to the tractor to andfrom its normal operating position thereon, by rotating the main supporting pipe beam 95. The means for rotating this beam by hand will now be described. Referring more particularly to Figures 5, 6, '7 and 8, the left hand end of the beam is provided with an internal gear member 2I5 having a hub 2|9 rigidly ilxed to the end of the beam 35. A spur gear 2|1 is disposed within the internal gear member 2|5 in meshing engagement therewith and in eccentric relation thereto. The spur gear 2|1 is provided with a cylindrical bore 2|8, which is concentric with the circumference of the spur gear 2|1, and

=journaled within the bore 2|8 is a cylindrical disc 2|9 rigidly attached to a shaft 220 which is disposed in eccentric relation thereto. The shaft 220,l however, is disposed coaxiaily with the beam 35 and is journaled in a bearing member 22| atthe lower end of an arm 2-22 which is rigidly supported on the lower side of the sheet 1|. The inmovement of the spur gear 2|1within the in 1l ternal gear 2|5, there is arelative rotationof the two gears 2|5. 2|1, which is a function of the difference in the number of teeth in the two gears. 'I'he spur gear 2|1 is held against rotation by means of an arm 225. fixed to the gear 2|1 and extending radially therefrom. The arm 225 is connected by a bolt 225 to a member 221 provided with an elongated aperture 22| adapted to receive a' shaft 22| which is iournaled on the frame of the implement and is provided at its outer end with a crank 22|.

The shaft 222 is connected in driving relation Vto the shaft 222 by means of a drive chain 225 trained over a relatively small sprocket 222 on the crank shaft 22| and a relatively large sprocket 221 on the shaft 22|. Thus, by turning the crank 222. shaft .22| drives shaft 22| at a relatively slow speed, and this moves the spur gear 2|1 around the internal gear 2|5 in an orbit by means of the eccentric disc 2|2, and since the spur gear 2|1 is held against rotation by the arm 225, each orbital movement of the spur gear around the internal gear 2|5 results in an angular movement ofthe latter, and consequently an angular movement of the supporting beam 25. The vertical movement of the spur gear 2|1 relative to the crank shaft 222 is accommodated by the elongated slot 22|.

Assuming a difference of eight teeth between the number of teeth on the internal gear 2I| and the spur gear 2|1, one revolution of the drive shaft 22| will cause an angular movement of the main beam equal to the angle subtended by eight teeth on the gear 2|5, and in the same direction of rotation. 1 Thus, to raise the implement from the lowered position shown in Figure 5 to the normal position shown in Figure 2. the crank 22| is rotated in a clockwise direction. causing the pipe 25 to rotate in the same direction to wind up the chains Il and raise the entire implement to normal operating position, in which the pipe 25 rests upon the arms 25, as indicated in Figure 7. Conversely, to lower the implement from normal position to the ground, it is necessary to rotate` the crank in a counterclockwise di` rection to unwind the chains 22.

As the implement lowers to the ground the two sections swing relative to each other about the connecting bolt |22 until the supporting legs 2| rest upon theground,`while the rear end of the husking units |22 are still supported on the legs |52, which swing forwardly as the implement lowers. Each of the husking units |22 is provided with a hook 22| swingably connected to a pin 22| on the inner side 0f the husking units. by means of'which the husking units can be held in jack-knifed position with respect to the snapping units when the latter are resting upon the legs 2| to permit the rear end of the husking units to be disconnected from the rear axle housing. Each of the hooks 24| has an outwardly turned forward end which is adapted to hookinto one of several holes 222 (see Figure i), in a link 222 which extends along the inner side of the husking unit and is pivotally connected by a bolt 242 to an arm 225, which is rigidly connected to the plate 22. During operation, the rear end of the 'link 242 is connected to a tension spring 25|, the

opposite end of which is attached to a bar 25| adapted to be inserted through an aperture 252 in the post |22 on the rear axle housing of the tractor. The lower edge of the bar 25| is notched,

' as indicated in Figure 4, to engage the lower edge of-the opening 222.- When the implement is in on 'the tractor, the spring 252 `member |52.

. l2 acts as a counterbalancing spring to balance the weight of the snapping unit about the axis of the beam 25, to facilitate vertical adjustment of the picking units 1|.

since the gear mechanism connecting the crank 22| with the beam 25 is self-locking or non-reversible, no additional parts are needed to lock the implement in raised position All that is necessary to lower the implement from normal position is to turn the crank 22| in a counterclockwise direction until the legs 2| rest upon the ground. Before the implement is lowered. howevenit is necessary to release the counterbalancing spring bar 25| from the post |22. After the hooks 24| on each yof the husking units have been hooked to the links 222, the supporting legs |52 can be disconnected from the frame The chains 22 should then be disconnected fr'om the arms 25 and the adjusting links 22 are then disconnected from the plates 22, and after certain power shaft connections have been disconnected, the details of which will be described later, the tractor is ready to be backed away from the implement.

It is evident that the front wheels of the tractor must roll over the transverse beam 25 during removal of the tractor from the implement, and to this end, a ramp is provided in the form of a plate 255, swingably connected to the pipe or member 25 by means of U-shaped strap supports 255. fixed to the plate 255 by bolts 251 and embracing the pipe 25. 'The ramp'plate 255 is' swingable into an inclined ground engaging position, either in front or lin back of the pipe 25, depending upon whether the tractor is being moved into or out of the implement. As indicated in Figure 9, the ramp 255 is in position for the front wheels of the tractor to go over the part 25 when the tractor is moved into the implement, while the dotted lines indicate the position of the plate 255 when the tractor is being moved out of the implement. A short length of spring metal 25| is rigidly fixed, as by welding, at one end to the pipe 25 and is adapted to engage Athe virtue of the counterclockwise rotation or the pipe 25. Engagement of the spring 25|v with the plate 255 causes the latter to swing over the pipe 25 into ground engaging position ahead of the latter, so that the ramp is automatically placed in position for the front wheels of the tractor to be backed out ofthe implement. Before the tractor is driven into place. the ramp 255 is easily drawn by hand back to a rearwardly inclined position if the spring 252 is rst held down against the pipe.

The mechanism on the -lmplement attachment is driven from the tractor power take-off shaft 22|. the end of. which projects rearwardly out of the tractor axle housing yand is suitably splined for receiving a pair of sprockets 22|,222 in driving relation. The-two sprockets 22|, 252 are connected by chains 222, 222 to drive the gathering and husking mechanisms on opposite sides of the tractor. respectively. The chains 222, 224 are connected to a pair of forwardly extending drive shafts 225, 222, respectively, through sprockets 221, 222, respectively. Any suitable slip clutch mechanism y222 is provided between each of the sprockets 221, 228 and their respective drive shafts 225, 222. The forward ends of the to gearing within the gear boxes |41, the

13 detalls of which gearing are not a part of the present invention. The gear box |41 has an output shaft 215, on which are mounted a pair of lsprockets 216, 211. The output shaft 215 is substantially parallel to the axes of the snapping rolls 2|, 22 and drive the latter through a chain` 218 which is trained overl the sprocket 211 and over a sprocket 218 fixed to the shaft 24 of the inner snapping roll. The two snapping rolls of each pair are interconnected by suitable gearing (not shown) as is customary, for driving-the two snapping rolls in relatively opposite directions.

The inner gatherer chains |25 are driven from a gear box 288 (Figure 4) by power from a forwardly extending power shaft 28| which is driven by a chain 282, which is driven from the shaft 24 of the inner snapping roll 22. Sprocket 216 on shaft 215 drives a chain 285 which is trained over a sprocket 288 fixed to a rearwardly extending shaft 281 journaled in a bearing 288 supported on the under side of the sheet 1|-. A bevel gear 288 on the rear end of the shaft 281 drives a bevel gear 288 on shaft 85 over which is trained the chain 11 of the ear conveyor alongside the snapping rolls for drivingvthe conveyor. The outer gatherer chains 85, |84 are driven through the conveyor chain 11 and the gatherer chain shaft 88. The chain 285 also passes over a chain-tightening idler 28| and a sprocket 292 fixed on a shaft 283 which drives rearwardly through a universal joint 284, the shaft 285 of one of the husking rolls |36. The shaft |12 of the auger is driven through a chain 286 which is driven from a sprocket on the shaft 285 behind the universal joint 284. The universal joint 234 is dispose'd substantially in transverse alignment with the axis of the pivot bolt |44 which interconnects the husking and snapping units and thus permits power to be transmitted from the shaft 293 on the snapping unit to the shaft 285 on the husking unit, regardless of the relative angular position of the two units.

The shaft 285 of the outer husking roll is extended rearwardly from the rearward end of the husking roll |36 and is connected through a pair of bevel gears 388 to a transverse shaft 38| which extendsl through the husking unit*l and projects from the inner side thereof. The inner end of the shaft 38| is connected by a chain 382 and sprocket 383 to a transverse shaft 384 spaced rearwardly of the shaft 38| and mounted on the shaft 384 is the sprocket 385 which drives the inner conveyor chain |63. The shaft 384 extends across the husking unit and is connected by a pair of bevel gears at 386 to the rear sprocket |66 which drives the conveyor chain |6|.

The fan driving belt |84 is trained over a belt pulley 381 iixed on the inner end of the shaft 38|. This belt is maintained tight regardless of movement of the husking units by means of a spring actuated idler 388, supported on the post |82. The elevator chains 282 are driven through a drive chain 3|8 trained over a sprocket (not shown) on the shaft 2 I8 and extending forwardly to a drive sprocket 3|I fixed to a. shaft 3|2 which receives its power from suitable gearing (not shown) within a gear box 3|3 supported on a frame member 3|4, which is fixed to a rearwardly extending supporting frame 3|5 on which the rear end of the power shaft 268 is journaled. The gear box 3|3 has an input shaft 3|6 extending rearwardly therefrom, on which is mounted a sprocket 3I1 over which the chain 264 is trained.

1. A harvesting implement comprising a mobile frame, a'crop gathering unit pivotally mounted thereon by means providing for vertical movement relative thereto, a crop treating unit associated with said gathering unit for receiving gathered crops therefrom, means for pivotally supporting one end of said treating unit on said frame on an axis spaced from the pivot mounting of said gathering unit, and means for pivotally supporting the other end of said treating unit on said gathering unit.

2. A harvesting implement comprising a tractor having a longitudinally disposed body and tran'sverse axle housings mounted thereon and carried on wheels. a crop gathering unit disposed alongside said body and pivotally mounted thereonby means providing for vertical swinging movement relative thereto, a crop treating unit disposed behind said gathering unit and adapted to receive crops therefrom, means for pivotally supporting one end of said treating unit on one of said tractor the position of said unit about said axis to adjust the height of the forward end, a husking unit disposed behind said picking unit and adapted to receive snapped ears therefrom, means for swingably supporting one end of said husking unit on said tractor for movement about an axis spacedfrom said transverse axis, and means for swingably supporting the other end of said husking unit` on said picking unit.

4. A com harvesting implement comprising a tractor having a longitudinally disposed body and a pair of opposed laterally extending whee1 sup-J ported rear axle housings, a snapping unit disposed near the front end of the tractor and extending longitudinally alongside thereof, means for swingably supporting. said snapping unit on said body providing for movement about a transverse axis, means for adjusting the position of said unit about said axis to adjust the height of the forward end thereof, a husking unit disposed longitudinally behind said snapping unit and adapted to receive ears therefrom, means for swingably supporting the rear end of said husking unit on said rear axle housing, and means for swingably supporting the front end of the husking.

unit on said snapping unit to accommodate the swinging movement of the latter during vertical adjustments.

5. A harvesting implement comprising a mobile frame, a crop gathering unit pivotally mounted thereon by means providing for vertical move-l ment relative thereto, gathering mechanism associated with said gathering unit, a crop treating unit including crop treating mechanism for re-A ceiving crops from said gathering mechanism,

means for pivotally supporting one end of said treating unit on said frame, means for pivotally supporting the other end'of said treating unit on` said gathering unit, a power driven shaft jour-,A naled on said gathering unit, and power transmitting means, journaled on the axis of said pivot means between said units, for connecting saidf crop treating mechanism to said power shaft on' mechanism. v

6. A corn harvesting implement comprising a tractor having a longitudinally disposed body carried on wheels. a picldnghnit disposed alongside said body and pivotally mounted at one side there of by means providing for swinging movement about a transverse axis, picking mechanism associated with said picking unit and including a power driven shaft journaled on the latter for movement therewith and operativelyccupled to the tractor engine to receive power therefrom, a husking unit disposed behind said picking unit and adapted to receive snapped ears therefrom,

means for swlngably supporting one end of said husking unit on said tractor for movement. about an axis spaced from said transverse axis. means for swingabiy supporting the other end of said husking unit on said picking unit, husking mechanism associated with said husking unit. and ilexible power transmitting means interconnecting said power driven shaft on said-picking unit with said husking mechanism.

7. A corn picker comprising a mobile frame, an upwardly and rearwardly inclined picker unit on said frame, an elevator disposed alongside the upper portion of said picker unit, an upwardly and rearwardly inclined husking unit on said frame. the forward end thereof being disposed directly below said elevator to receive crop therefrom, and the rearward end thereof being disposed in an elevated position, and a final elevator having a hopper disposed below the elevated end of said husking unit.

8. The combinationl with a tractor having a narrow longitudinally extending body, and a rear axle housing extending laterally therefrom, of a corn picker comprising a picking unit mounted on said tractor body adjacent the forward end in an upwardly and rearwardly inclined position, an elevator disposed .alongside the upper portion of said picking unit for conveying ears from said picking unit, a husking unit having a receiving. end disposed below the delivery end of said elevator and extending upwardly and rearwardly over said axle housing, and endless conveyor means for moving the ears through said husking unit. Y

9. In a machine of the class described, a pair of cooperative snapping rolls, and a conveyor i'or receiving ears of corn from said rolls and conveying the same to a point of delivery, said conveyor comprising an endless conveyor chain having ear` engaging paddles. a sprocket near the forward end of said pair of rolls, a second sprocketdisposed adjacent the point of delivery of said conveyor, said chain. engaging said two sprockets for conveying material-therebetween,

.and a third sprocket spaced laterally from said second sprocket and over which said chain is trained around to provide a substantially 90 degree turn at the said point of delivery.

l0. The combination set forth in claim 9, including the further provision. of a trough in which I said conveyor moves the ears of corn, said trough being inclined downwardly and away from said second sprocket to cause the ears to slide away from the paddles as the latter swing around said second sprocket.

ll. A corn harvesting implement comprising a tractor having a longitudinally disposed body and a pair of opposed laterally extending wheel supported rear axle housings, a snapping unit disposed near the front end of the tractor and extending longitudinally alongside thereof, means for swingably supporting said snapping unit prosaid axis to adjust the height of the forward end thereof, a husking unit disposed longitudinally behind said snapping unit and adapted to receive ears therefrom. means for swingably supporting the rear end of said husking unit on said rear axle housing for movement about an axis spaced from said transverse axis, means for swingably supporting thefront end of the husking unit on said snapping unit to accommodate the swinging movement of the latter d-uring vertical adjustments, said husking unit having a corn discharge chute adjacent the rear end thereof behind the tractor axle, a receptacle disposed behind said axle under said discharge chute for receiving vcorn therefrom, and a fan rigidly mounted on. said rear axle housing and having a discharge duct adapted to direct an air blast rearwardly between said husking unit and said receptacle through the corn falling into the latter.

12. In an implement attachment for a tractor, the combination of a main supporting beam Journaled on said implement attachment, flexible lifting means attached to said beam and adapted for connection to said tractor, means for rotating said beam to wind said lifting means thereon to raise said implement from inoperative position resting on the ground to normal operating position on the tractor, and altilting lever attached to said implement attachment to rock the same/- about the axis of said beam during operation.

13. An implement attachment for a tractor .comprising in combination, a main supporting beam adapted to be transversely positioned beneath a tractor, a pair of implements supported on said beam in laterally spaced relation to receive said tractor therebetween, said implements being journaled on the beam to permit rotation of the latter, flexible lifting means attached to said beam and adapted for connection to the tractor, and means for rotating said beam to wind `said lifting means thereon.

14. An implement vattachment for atractor comprising in combination, a main supporting beam adapted to be transversely positioned be. neath a tractor between the front and rear wheels thereof, a pair of implements supported on said beam in laterally spaced relation to receive said tractor therebetween, said implements being jourand adapted for connection to the tractor, means for rotating said beam'tc wind said lifting means thereon, and ramp means swingably mounted on said beam between said implements land adapted to swing into inclined ground engaging position either in front or rear of said beam to assist the front wheels of the tractor to roll over the latter.

15. The combination set forth in claim 14,A further characterized by means ilxed on said beam and rotatable therewith into engagement with said ramp during lowering of the implement to swing said ramp to a position-in front of said beam.

16. An implement attachment for a tractor comprising a frame having means for supporting the same on a tractor and adapted to extend forwardly acUacent a front wheel of the tractor, and ya guard roller journaled on said frame and disposed to engage said front wheel when. the latter is turned against said frame.

1'7. An' agricultural implement comprising a mobile frame, a primary implement unit pivotally sacas mounted thereon by means providing for vertical movement relative thereto. a secondary implement unit pivotally supported on oneend on said primary unit and pivotally supported on\the other end on said frame for swinging movement about an axis spaced from the pivot axis of said primary unit. v

"18. An agricultural implement comprising la mobile frame, a primary implement unit pivotally mounted thereon by means providing for vertical movement relative thereto, a secondary implement unit pivotally supported on one end on said primary unit and link means pivotally connected to the other end of said secondary unit and to said frame for supporting said other end of said secondary unit and to provide for bodily movement of the secondary unit relative to` the frame.

19. The combination with a mobile frame, of a detachable implement, extensible means on said implement adapted to be connected to said frame when the implement is detached therefrom and lying on the ground,iincluding a self locking jack mounted on said implement for retracting said extensible means to draw and lock said implement into normal operating position on said frame, y

20. The combination with a mobile frame, of a detachable implement, a support rotatably mounted on said implement, a bracket on said frame provided with a recess for receiving said support, flexible means connected to said support and to said bracket adjacent said recess, whereby when said support is rotated to wind said flexible means thereon, said support will be raised and guided into said recess.

21. Inga corn picker, a pair of longitudinally extending snapping rolls and a supporting frame to which said rolls are connected including a pair of tubular members disposed along the outer sides of said rolls,- said members having forwardly converging top and bottom sides, and a transverse member behind said rolls interconnecting said Y tubular members.

22. In a corn picker, a gatherer frame comprising a tubular frame member disposed transversely of the direction of movement, a pair of substaml tially parallel tubular frame members rigidly attached to said transverse members and extending forwardly therefrom, the vertical dimension of said tubular members tapering `toward the forward end thereof, and a pair of snapping rolls disposed between said parallel members and sup-l ported thereon.

23. The combination with a mobile frame, of a detachable implement frame, a rotatable winding member journaled on one of said frames, a flexible lifting member interconnecting said winding member with the other of said frames, means for rotating said winding member to raise said implement frame into operating position, and

means for adjusting said implement frame angularly relative to said mobile frame during operation about the axis of rotation of said winding member.

24. The combination with a tractor having a wheel supported frame, of a harvesting implement having a frame adapted to be detachably mounted on said tractor in a longitudinally extending position adjacent the side of the tractor frame and including forwardly extending crop gathering meana a transversely disposed winding member journaled on one of said frames, a nexible lifting member interconnecting said winding member with the other of said frames, means for rotating swinging` said implement frame relative to saidv tractor frame about the axis oi' rotation oi' said winding member to raise and lower said crop gathering means.

25. The/combination with a mobile frame, of a detachable implement comprising primary and .secondaryirames pivotally connected together. a rotatable winding' member Journaled on said primary implement frame, a ilexible lifting member interconnecting said winding member and said mobile frame, means for rotating said winding member to wind said flexible membe'i thereon to raise the pivotally connected ends of said frames into operating position on said mobile frame. means for adjusting said primary implement frame angularly about the axis of said winding member to control the operating position thereof,-`

and means for swingably 'supporting the opposite end of said secondary implement frame on said mobile frame.

26. The combination with a mobile frame, of a detachable implement comprising primary and secondary frames pivotally connected together by means providing for relative vertical swinging movement, a rotatable winding member journaled on said primary implement frame, a flexible lifting member interconnecting said winding member andsaid mobile frame, means for rotating said winding member to wind said flexible member thereon to raise the pivotally connected ends of said frames from the ground into operating position on said mobile frame, means for adjusting said primary implement frame angularly about the axis of said winding member to control the operating position thereof, and means for swingably supporting the outer end of said secondary frame on said mobile frame providing fo vertical swinging movement and longitudinal shifting movement relative thereto to permit lifting and lowering said pivotally connected ends of said frames with said outer end of the secondary frame supported on said mobile frame.

27. 'Ihe combination with a tractor having a wheel supported frame, of a harvesting implement having s. frame comprising articulated crop gathering and crop treating frames swingable vertically relative to each other and extending longitudinally along a side of said tractor frame, a transversely disposed winding member :lournaled on said gathering frame, a flexible lifting member interconnecting said winding member and said tractor frame, means for rotating said winding member to wind said flexible member thereon to raise the connected ends of said implement frames from the ground into operating position on the tractor, means for adjusting said gatheringA frame angularly about the axis of said winding member in said operating position to raise and lower the outer end thereof, and means for swingably supporting the outer end of said treating frame on said tractor providing for vertical swinging movement and longitudinal shifting movement relative thereto to permit lifting and lowering the articulat` d ends of said implement frames with said outer, end of the treating frame supported on said tractor frame.

28. For use with a tractor including a body and a wheel supported rear axle housing, a. corn picker of the tractor mounted type comprising an articulated frame having a front section and a rear section pivoted. together about a transverse axis, means for supporting said frame alongside said tractor body inside the plane of one of the tractor cluding Vthe further provision of means for fixing f said front and rear sections together after the wardly from said pivot connection over the rear axle housing of the tractor, and means for swingably supporting said rear section on said rear axle housing.

29.For use with a. tractor including a body and a wheel supported rear axle housing, a corn f' picker of the tractor mounted type comprising an articulated frame having a front section and a rear section pivotedv together about a transverse axis, lifting means for raising the pivoted ends of said sections from an inoperative position on the ground to'a normal operating position on the tractor alongside the tractor body inside the plane of one of the tractor'wheels with the axis of said'pivot connection in normally xed position substantially midway of the longitudinal dimension of the tractor, gathering and picking mechanism mounted on said front section, 'cleaning mechanism mounted on said rear section, said rear section being inclined upwardly and rearwardly from said pivot connection over the rear axle housing of the tractor, and means for swing- '-ably supporting said rear section on said rear axle housing providing for downward and forward movement of said rear section to a position ahead of said axle housing when said pivoted ends are lowered to said grounded position, permitting the tractor to be backed away fromV the corn picker after the latter has been disconnected therefrom. i t

30. For use with a tractor including \)a body and a wheel supported rear axle housing, a corn picker of the tractor mounted type comprising an articulated frame having a front section and a rear section pivoted together about a transverse axis, lifting means for raising the pivoted ends of said sections from an inoperative position on the ground to anormal operating position on the tractor alongside the tractor body inside the plane of one of the tractor wheels with the axis corn picker has been lowered to the ground. whereby said rear section is supported on said front section to sustain the rear section in uP- wardly and rearwardly inclined position aiter the A tractor has been disconnected therefrom and backed away from said com picker.

34. The combination set forth in claim 29, in-

cluding the further provision of a fan rigidly mounted on said rear axle housing and projecting of said pivot connection in normally fixed position substantially midway of the longitudinal di- Amension of the tractor, gathering and picking mechanism mounted on said front section, cleaning mechanism mounted on said rear section, said rear section extending rearwardly from said pivot connection over the rear axle housing of the tractor, and means for swingably supporting said rear section on said rear axle housing providing for downward and forward movement'of said rear section to a position ahead of said axle housing when said pivoted ends are low. red to said vgrounded position, permitting the/tractor to be position,

33. The combination 'set forth in claim-ao, m-

above the upper side of the latter beneath the -inclined rear section and having a discharge duct adapted to direct an air blast rearwardly through corn falling from said cleaning mechanism, said fan being Apositioned to avoid engagement with said rear section as the latter swings forwardly into said inoperative position.

35. An implement attachment for a tractor comprising in combination, a frame including a beam adapted to extend transversely beneath the tractor between the front and rear wheels of the latter, said beam being shiftable relative to the tractor between a raised operating position and an inoperative position on the ground, means shiftably mounted on said beam adapted to engage certain of the tractor wheels to facilitate movement of the latter over said beam, said shiftable means being movable to one position for use when the tractor is being moved away fromA said implement attachment and movable to another position for use when the tractor is being moved toward said attachment, and control means operable from a remote position for shifting said shiftable means to one of said positions.

36. An implement attachment for a tractor comprising in combination, a frame including a beam adapted to extend transversely beneath the tractor between the front and rear wheels of the latter, said beam being shiitable relative to the tractor between a raised operating position and an inoperative position on the ground, ramp means shiftably mounted on said beam and engageablewith certain of the tractor wheels to facilitate movement of the latter over said beam,

vsaid ramp 'means being movable from one side of said beam to the other to accommodate movements of the tractor over the beam in opposite directions, respectively. and control means operable 'from a remote position for shifting said ramp meansto one side of said beam.

37. An implement attachment for a tractor comprising in combination, a. frame including a. beam adapted to extend transversely beneath the' tractor between the front and rear wheels of the latter, said beam being shiftable relative to the tractor between a raised-operating position and an inoperative position on the ground, ramp means shiftably mounted on said beam and engageable with certain of the tractorv wheels-to facilitate movement of the latter over said beam, said ramp means being movable from one side oi said beam to the other to accommodate movements of the tractor over the beam in opposite directions, respectively, and control means, responsive to movement of said beam from raised position to grounded position for shifting said ramp means to a position facilitating movement of the tractor away from said implement attachment.

38. An implement attachment for a tractor comprising in combination, a frame including a beam adapted to extend transversely beneath the tractor between the front and rear wheels of the latter, said beam. being shiitable relative to the sansa tractor between a raised operating position and an inoperative position on the ground, ramp means swingably mounted on said beam between a forwardly inclined position in engagement with the ground and a rearwardly inclined position in engagement with the ground to facilitate movement of certain of the tractor wheels over said beam as the tractor is moved relative to the implement when the latter is in said inoperative position, and control means responsive to movement of said beam when the latter is lowered to the ground, for shifting said ramp means to a position facilitating movement of the tractor away from said implement attachment.

39. In combination, a tractor having a body, a mounting member secured thereto and having a slot, a lifting member pivotally mounted on the mounting member, an implement having a connecting portion engageable with the mounting member and receivable in the slot therein, means for anguiarly moving the lifting member to shift the implement between an operative position in which it is raised and mounted upon the tractor with the connecting portion thereof positioned in the slot in the mounting member and an inoperative position in which it rests upon the ground, and means for fixing the lifting member to the mounting member in raised position of the implement to maintain the implement in this position by holding the said connecting portion of the implement in the slot.

40. In combination, a tractor having a body, a mounting membersecured thereto and having a slot having an open end, a lifting member pivotally mounted on the mounting member for movement to and from a position in which it closes the open end of the slot, an implement having a connecting portion engageable with the mounting member and receivable in the slot therein, means for angularly moving the lifting member to its said position to raise the implement to an operative position in which it is mounted upon the tractor with the connecting portion thereof positioned in the slot in the mounting member yfrom an inoperative position in which it rests upon the ground, and means for fixing the lifting member to the mounting member in raised position of the implement with the lifting member closing the open end of the slot in the mounting member to maintain the said connecting portion of the implement in the slot.

41. In combination, a tractor having a body, a mounting member secured thereto and having a recess, a lifting member pivotally mounted on the mounting member, an implement having a connecting portion engageable with the mounting member and receivable in the recess therein, means for angularly moving the lifting member to shift the implement between an operative position in which it is raised and mounted upon the tractor with the connecting portion thereof positioned in the recess in the mounting member and an inoperative position in which it rests upon the ground, and means for fixing the lifting member relative to the mounting member in raised position of the implement to maintain the implement in this position by holding the said connecting portion of the implement in the recess.

NORMAN F. ANDREWS. RUSSELL L. DORT.

REFERENCES CITED The following references are of record in the ille or' this patent:

UNITED STATES PATENTS Number Name y Date 1,404,069 Swinehart Jan. 17, 1922 

